//
//  GoAndBack.swift
//  Swift-LeetCode
//
//  Created by 卢悦明 on 2024/1/23.
//

import UIKit

/// 前进后退，例如：浏览器的前进、后退；美图秀秀的撤销和恢复修改功能
class GoAndBack: NSObject {
    var goStack: Stack<Int> = Stack()
    var backStack: Stack<Int> = Stack()
    
    
}
